DEV'S

SimpleAdapter - HashMap Data Type

MainActivity.java

package com.example.globalroot.collectionapp;

import android.content.DialogInterface;
import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;

import java.util.ArrayList;
import java.util.HashMap;

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener, AdapterView.OnItemLongClickListener{

    private ArrayList<HashMap<String,String>> items = new ArrayList<HashMap<String, String>>();
    private SimpleAdapter simpleAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ActionBar actionBar = getSupportActionBar();
        actionBar.setTitle("Shopping Items");
        ListView listView = (ListView)findViewById(R.id.listView);
        simpleAdapter = new SimpleAdapter(this,items,R.layout.list_cell,
                new String[]{Util.ITEM_NAME,Util.ITEM_PRICE},new int[]{R.id.itemName,R.id.itemPrice});

        listView.setAdapter(simpleAdapter);
        listView.setOnItemClickListener(this);
        listView.setOnItemLongClickListener(this);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main_menu,menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()){
            case R.id.action_add:
                Intent intent = new Intent(this,AddEditActivity.class);
                intent.putExtra(Util.INDEX,Util.NEW_ITEM);
                startActivityForResult(intent,Util.ADD_EDIT_REQ_CODE);
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == Util.ADD_EDIT_REQ_CODE){
            if (resultCode == Util.ADD_EDIT_RES_CODE){
                Bundle bundle = data.getExtras();
                HashMap<String,String> item = new HashMap<String, String>();
                item.put(Util.ITEM_NAME,bundle.getString(Util.ITEM_NAME));
                item.put(Util.ITEM_PRICE,bundle.getString(Util.ITEM_PRICE));
                item.put(Util.ITEM_QTY,bundle.getString(Util.ITEM_QTY));
                int index = bundle.getInt(Util.INDEX);
                if (index == Util.NEW_ITEM){
                    //add
                    items.add(item);
                }else{
                    //edit
                    items.set(index,item);
                }

                simpleAdapter.notifyDataSetChanged();
            }
        }
    }

    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int index, long id) {
        Intent intent = new Intent(this,AddEditActivity.class);
        intent.putExtra(Util.INDEX,index);
        intent.putExtra(Util.ITEM_NAME,items.get(index).get(Util.ITEM_NAME));
        intent.putExtra(Util.ITEM_PRICE,items.get(index).get(Util.ITEM_PRICE));
        intent.putExtra(Util.ITEM_QTY,items.get(index).get(Util.ITEM_QTY));
        startActivityForResult(intent,Util.ADD_EDIT_REQ_CODE);
    }

    @Override
    public boolean onItemLongClick(AdapterView<?> adapterView, View view, int index, long l) {
        showDeleteDialog(index);
        return true;
    }

    private void showDeleteDialog(final int index){
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Wait!!!");
        builder.setMessage("Do you really want to delete this item ?");
        builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                items.remove(index);
                simpleAdapter.notifyDataSetChanged();
            }
        });
        builder.setNegativeButton("No",null);
        AlertDialog alertDialog = builder.create();
        alertDialog.show();
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/listView"
    tools:context=".MainActivity">

</ListView>

AddEditActivity.java

package com.example.globalroot.collectionapp;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class AddEditActivity extends AppCompatActivity {

    private int index = -1;
    private EditText nameEdit;
    private EditText priceEdit;
    private EditText qtyEdit;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_edit);
        nameEdit = (EditText)findViewById(R.id.itemNameEdit);
        priceEdit = (EditText)findViewById(R.id.itemPriceEdit);
        qtyEdit = (EditText)findViewById(R.id.itemQtyEdit);
        Bundle bundle = getIntent().getExtras();
        if (bundle != null){
            index = bundle.getInt(Util.INDEX);
            if (index != Util.NEW_ITEM){
                nameEdit.setText(bundle.getString(Util.ITEM_NAME));
                priceEdit.setText(bundle.getString(Util.ITEM_PRICE));
                qtyEdit.setText(bundle.getString(Util.ITEM_QTY));
            }
        }

    }

    public void  onSavePressed(View view){
        Intent intent = new Intent();
        intent.putExtra(Util.ITEM_NAME,nameEdit.getText().toString());
        intent.putExtra(Util.ITEM_PRICE,priceEdit.getText().toString());
        intent.putExtra(Util.ITEM_QTY,qtyEdit.getText().toString());
        intent.putExtra(Util.INDEX,index);
        setResult(Util.ADD_EDIT_RES_CODE,intent);
        finish();
    }

}

activity_add_edit.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".AddEditActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Item Name"
            android:layout_marginTop="20dp"
            />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Enter item name"
            android:id="@+id/itemNameEdit"
            android:inputType="text"
            android:imeOptions="actionNext"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Item Qty"
            android:layout_marginTop="20dp"
            />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Enter item qty"
            android:id="@+id/itemQtyEdit"
            android:inputType="number"
            android:imeOptions="actionNext"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Item Price"
            android:layout_marginTop="20dp"
            />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Enter item price"
            android:id="@+id/itemPriceEdit"
            android:inputType="number"
            android:imeOptions="actionNext"
            />
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/saveBtn"
            android:layout_gravity="center"
            android:text="Save"
            android:onClick="onSavePressed"
            />

    </LinearLayout>

</ScrollView>

Util.java

package com.example.globalroot.collectionapp;

public class Util {

    public static final int ADD_EDIT_REQ_CODE = 121;
    public static final int ADD_EDIT_RES_CODE = 122;
    public static final String ITEM_NAME = "item_name";
    public static final String ITEM_QTY = "item_qty";
    public static final String ITEM_PRICE = "item_price";
    public static final String INDEX = "index";
    public static final int NEW_ITEM = -1;

    public String convertIntToString(int num){
       // 1 => "1"
        return Integer.toString(num);
    }
}

list_cell.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="20dp"
    >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:id="@+id/itemName"
        android:text="Item name"
        android:textSize="28sp"
        android:textStyle="bold"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:id="@+id/itemPrice"
        android:text="Item Price"
        />

</RelativeLayout>

menu/main_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item android:title="Add" android:id="@+id/action_add" app:showAsAction="ifRoom"/>
</menu>

Android

2018-11-27 21:26:06
1) Android Videos
2018-07-09 06:40:27
2) 09 Jul - Classroom Videos
2018-07-06 21:15:16
3) Recommended Videos
2018-07-06 21:00:45
4) Classroom Videos
2018-06-21 23:15:31
5) ViewPager TabStrip - TabLayout
2018-06-21 22:19:12
6) AsyncTask Filedownload
2018-06-21 19:54:27
7) Service Connection - Bind Service
2018-06-21 03:08:05
8) Instrumentation Test
2018-06-20 22:10:24
9) ApiDoc - Shopping List App
2018-06-20 22:08:56
10) AsyncTask - PreferenceManager - Example
2018-06-20 20:02:07
11) Fragments - RecyclerView Examples UnitTesting- Part 4
2018-06-20 19:59:57
12) Fragments - RecyclerView Examples -Database - Part 3
2018-06-20 19:59:00
13) Fragments - RecyclerView Examples - Part 2
2018-06-20 19:52:33
14) Fragments - RecyclerView Examples - Part 1
2018-06-19 23:52:14
15) Customize Adapter Example
2018-06-19 22:58:07
16) SimpleAdapter - HashMap Data Type
2018-06-19 03:39:01
17) ListView Add-Edit Example
2018-06-19 02:25:02
18) OptionMenu - Background - Shape
2018-06-18 23:53:27
19) SetActivityForResult Example
2018-06-18 21:33:01
20) Android Button Event
2018-06-18 03:19:58
21) Android Calculator View - Activity LifeCycle
2018-06-15 02:59:14
22) ViewPager - TabLayout Example
2018-06-15 00:14:08
23) Broadcast Receiver SMSManager
2018-06-14 22:58:22
24) Android Location Aware Apps - OnScreen Permission
2018-06-14 05:13:06
25) Sqlite Example - SimpleCursor Adapter
2018-06-14 03:03:36
26) Fragment - NavigationDrawer Example
2018-06-13 22:51:12
27) WebService POST
2018-06-13 05:07:48
28) WebService GET Example
2018-06-13 03:26:20
29) Service - Broadcast Receiver - SimpleAdapter
2018-06-12 23:00:54
30) ListView Add Edit Delete
2018-06-12 04:40:31
31) Background - SharedPreferences
2018-06-12 03:15:15
32) ActionBar - Option Menu
2018-06-12 01:05:30
33) RelativeLayout - ScrollView - Intent -Bundle
2018-06-11 03:38:21
34) Calculator App - Part 2
2018-06-11 00:19:59
35) Calculator Layout - Part 1
2018-05-15 03:07:50
36) Kotlin - Functional Programming Best Practices
2018-05-15 01:10:02
37) Shopping App - Kotlin - Companion Object
2018-05-14 23:51:41
38) Shopping App - Kotlin - Java SAM Interface To Lambda
2018-05-14 20:58:14
39) ShoppingList App - Api Doc
2018-05-14 01:03:11
40) Kotlin - Activities - UI Building - WebService - AsyncTask
2018-05-13 23:53:26
41) Kotlin Classes - Inheritance
2018-01-24 01:18:09
42) IOS - Performance Tuning - Best Practices
2018-01-24 00:07:33
43) Google API Pricing Plan
2018-01-24 00:03:21
44) Firebase Integration - App Analytics
2018-01-23 03:39:46
45) Profiling - Best Practices - Service - Broadcast Receiver - Document -PDF
2018-01-23 03:24:36
46) Broadcast Receiver - Profiling - Unregister - Reduce Memory Leak
2018-01-23 00:20:06
47) Background Service - Use Of LocationListener - Run Time Permission Check - Best Practice
2018-01-22 22:39:07
48) Android Memory Profiling - Performance Improvement - Handler - Runnable
2018-01-22 21:24:46
49) Android Performance Improvement Techniques - PDF Document
2018-01-22 04:50:44
50) Best Practice To Add Smooth View Pan And Communicate Between Activities
2018-01-22 02:50:35
51) Layout Technique - Activity LifeCycle
2017-12-11 05:23:14
52) ShoppingList App - Fragment - Part 5
2017-12-11 05:08:05
53) Feedback
2017-12-11 03:25:52
54) ShoppingList App - RecyclerView - Part 4
2017-12-11 00:27:38
55) ShoppingList App - DrawerLayout - Part 3 - Drawables - Menus - Gradle Configs
2017-12-11 00:23:30
56) ShoppingList App - DrawerLayout - Part 2 - Layouts
2017-12-11 00:20:50
57) ShoppingList App - DrawerLayout - Part 1
2017-12-10 21:17:56
58) ShoppingList App - Api Calls
2017-12-08 03:32:57
59) App - AsyncTast Part 2
2017-12-08 01:32:57
60) App - AsyncTast Part 1
2017-12-07 23:06:12
61) WebService GET - JSON Parsing
2017-12-07 04:51:25
62) Service And Broadcast Receiver
2017-12-06 22:49:06
63) Sqlite DB Example - ListView - Complex Form
2017-12-06 00:23:16
64) ListView - Adapters
2017-12-05 22:44:14
65) ActionBar Option Menu
2017-12-05 03:22:37
66) Multiple Activities
2015-11-19 02:45:01
67) Generate APK
2015-11-18 09:47:41
68) ShoppingList - Cloud App - WebService POST - Final
2015-11-17 13:29:54
69) Creating Swipe Views With Tabs Using ViewPager And TabLayout
2015-11-17 08:00:24
70) TabHost Using Fragment
2015-11-17 03:41:10
71) ShoppingList - Cloud App - WebService POST Example
2015-11-16 03:02:07
72) Camera - Gallery - Intent Calling - Customised Adapter
2015-11-13 08:36:20
73) Android Broadcast Receiver - SMS And Call
2015-11-12 13:17:25
74) WebService Example - HttpURLConnection Example
2015-11-12 13:11:57
75) Android Location Services - Foreground And Background Example
2015-11-11 23:04:58
76) ShoppingList App - Sqlite
2015-11-09 23:23:00
77) ShoppingList App - Continued
2015-11-09 04:09:50
78) ListView - ShoppingList App
2015-11-08 22:23:23
79) Android Layouts - Revisit
2015-03-25 04:05:46
80) Overriding Theme - ActionBar And Tab
2015-03-14 02:45:58
81) SMSReplier - V1.0 - Service - Intent Share - Phone - WhiteList - ReplyLog Addon - Part4
2015-03-14 02:44:07
82) SMSReplier - V1.0 - Service - Intent Share - Phone - WhiteList - ReplyLog Addon - Part3
2015-03-14 02:34:48
83) SMSReplier - V1.0 - Service - Intent Share - Phone - WhiteList - ReplyLog Addon - Part2
2015-03-14 02:30:01
84) SMSReplier - V1.0 - Service - Intent Share - Phone - WhiteList - ReplyLog Addon - Part1
2015-03-12 02:04:35
85) SMSReplier - V1.0 - Broadcast Receiver - Foreground Notification - Persistency Add-on - Part 2
2015-03-12 01:59:08
86) SMSReplier - V1.0 - Broadcast Receiver - Foreground Notification - Persistency Add-on - Part 1
2015-03-11 01:24:43
87) WebService -HTTP GET - AsyncTask - XML Parsing
2015-03-10 01:22:20
88) GoogleMap V2 - LocationListener - GPS
2015-03-09 01:51:33
89) SMS And Call Broadcast Receiver
2015-03-06 01:25:52
90) WebService - HTTP POST - AsyncTask - JSON Parsing
2015-03-05 01:18:38
91) WebService Introduction - GET - AsyncTask - JSON Parsing
2015-03-04 00:39:34
92) AsyncTask Example - Loading Image From Server
2015-03-03 00:15:21
93) SqliteDB Integration - SMSReplier V1.0 - Continued
2015-03-02 01:39:20
94) SMSList - Compose Fragment - FragmentBackStack - SMSReplier V1.0 - Continued...
2015-02-28 00:45:24
95) Post Login - DrawerLayout - Menu System - SMSReplier V1.0 Continued
2015-02-27 01:26:30
96) ViewPager - Tab - PreferenceManager Add On - Moving Everything To Fragment -SMSReplier V1.0 Continued
2015-02-25 02:56:09
97) Camera - Bitmap Add On - SMSReplier V1.0 - Continued
2015-02-25 01:29:05
98) SMSReplier - V1.0 - Registration Form
2015-02-24 03:56:38
99) Introduction To Service And BroadcastReceiver - IntentFilter
2015-02-23 00:57:08
100) Communicating Fragments - Bundle - Interface
2015-02-20 02:01:03
101) Navigation Drawer - Fragment Indroduction
2015-02-18 00:40:37
102) ListView - CustomAdapter With ViewHolder
2015-02-18 00:37:09
103) ListView - SimpleCursorAdapter Example
2015-02-16 04:13:55
104) ListView With SqliteDB - Add -Edit - Delete - Retrive
2015-02-13 23:07:36
105) OptionsMenu And ContextMenu With ListView
2015-02-13 01:40:46
106) ArrayAdapter And SimpleAdapter - ListView Example
2015-02-11 04:22:29
107) Forward And Reverse Bundling Objects Between Activities
2015-02-11 00:16:14
108) Bundle - Parceling Objects Between Activities
2015-02-10 00:34:05
109) ScrollView - PreferenceManager
2015-02-09 03:49:48
110) MultiActivity - AndroidManifest - Intent Introduction
2015-02-09 00:33:52
111) ClickListeners - Object Initialisation - Toast
2015-02-08 23:35:56
112) Bitmap From SD Card
2015-02-07 03:26:37
113) Android Layout Tricks - RelativeLayout
2015-02-06 23:04:29
114) Android Layout Tricks - LinearLayout
2015-02-05 20:47:58
115) UI Stack And Activity LifeCycle
2015-02-04 21:04:55
116) Working With Android Studio
2015-02-04 20:52:49
117) Java - OOP Concept - A Revisit
2014-12-08 22:11:38
118) Maintaining Login State - A Simple Approach
2014-12-07 21:03:53
119) 9 Patch Image Background
2014-12-05 04:25:48
120) WebService - JSON Example From 10.0.2.2 - Localhost
2014-12-03 03:30:10
121) VideoView - Media Controller
2014-12-03 02:52:15
122) Google Map V2 - Location Listener - Display Current Location - Check GPS Status
2014-12-02 23:12:16
123) Google Map V2 Integration
2014-12-02 04:22:51
124) Implicit Intent MIME Type - Camera - Gallery
2014-12-01 23:41:14
125) Camera - Implicit Intent - External Storage Example
2014-12-01 03:01:45
126) WebService - Google Map API WebService Example
2014-11-27 04:22:52
127) Google API Key, KeyStore, Certificate SHA1 Fingerprints
2014-11-27 03:59:46
128) Navigation Drawer - ActionBarDrawerToggle Example
2014-11-26 03:39:20
129) Notification From Service
2014-11-25 03:33:52
130) WebView Example
2014-11-24 00:37:52
131) Saving Item State - Fragment Master Detail Flow Final
2014-11-23 11:43:21
132) Package - Apk Suppress Lint Error
2014-11-21 22:49:09
133) AsyncTask Introduction - Load Image from URL
2014-11-21 05:15:40
134) GridView Example
2014-11-21 03:44:34
135) Location Aware Apps - GPS_PROVIDER - NETWORK_PROVIDER - Introduction
2014-11-20 03:20:22
136) SMSReplier Ver1.3 With Broadcast Receiver
2014-11-19 03:25:18
137) SMSReplier Ver1.2 Using Fragments And SQLite
2014-11-18 05:10:34
138) SMSReplier Ver1.1 Using Fragments - A Modular Approach
2014-11-17 05:21:15
139) ActionBar Tab - Fragment - ViewPager - Lisview - Compose Message
2014-11-15 04:43:26
140) APK - Android Application Package Process
2014-11-15 03:43:55
141) View Fragment And Pager - An Image Gallery Example
2014-11-13 04:07:42
142) Button,Checkbox With Image Background
2014-11-12 04:49:54
143) SMSReplier Ver1.0
2014-11-12 03:10:49
144) BroadcastReceiver With Permission
2014-11-11 03:06:20
145) BroadcastReceiver - Service - Example
2014-11-10 05:21:10
146) Background Service Example
2014-11-10 03:47:35
147) Runtime UI View Generation
2014-11-10 03:30:14
148) Shopping List App Version 3.1 - Shopping Object - Shopping Adapter - Custom Data View Binding
2014-11-10 00:01:53
149) Spinner Example - Dropdown - ArrayAdapter
2014-11-08 01:20:13
150) Shopping List App Version 3.0 - SQlite - CRUD
2014-11-07 03:16:33
151) Shopping List App Version 2.9 - SQlite - SimpleCursorAdapter
2014-11-06 03:08:08
152) Shopping List App Version 2.2 - JSONAdapter (custom) Addon
2014-11-05 04:12:28
153) Customising Adapter From BaseAdapter
2014-11-04 04:46:19
154) Shopping List App Version 2.1 - Alert Dialog Addon
2014-11-04 01:25:04
155) Shopping List App Version 2.1 - View-Edit-Delete Addon
2014-11-03 03:16:51
156) Json Revisit
2014-11-02 23:07:09
157) PreferenceManager Revisit
2014-10-31 03:19:16
158) Shopping List App Version 2.0 - PreferenceManager Add On - Save List
2014-10-30 03:42:19
159) Shopping List App Version 1.0 - Menu-onActivityResult-ListActivity
2014-10-30 02:18:46
160) SharedPreference Example
2014-10-29 22:17:27
161) Option Menu And Context Menu Example
2014-10-29 02:57:14
162) MultiActivity With OnActivityResult Example
2014-10-28 03:09:56
163) Bundle Example
2014-10-27 03:06:53
164) ListView - SimpleAdapter Example
2014-10-27 01:35:15
165) CoreJava Questions & Answers
2014-10-26 22:37:58
166) ListView - ArrayAdapter Example - Continued
2014-10-25 03:32:33
167) ListView - ArrayAdapter Example
2014-10-25 00:18:15
168) Calculator App
2014-10-23 03:14:37
169) Calculator Layout
2014-10-23 00:01:20
170) Event-listeners Example
2014-10-21 03:45:26
171) Android MultiActivity Example
2014-10-20 23:05:09
172) Activity Life Cycle Example
2014-10-20 23:03:17
173) Inheritance Scenario Wrt To Activity
2014-10-20 05:17:13
174) Android HelloWorld From Base
2014-10-20 01:49:59
175) Java Array And ArrayList
2014-10-19 23:06:25
176) Java Basics 1
2014-10-18 05:03:46
177) Hello World Java

© Vasudev.H / Email: tech3in@live.com